Seagate manual ST9144 family AT interface drives, Default drive geometry

ST9144 Family Installation Guide, Rev. B 5

ST9144 family AT interface drives

This guide provides installation information for the ST9051A, ST9052A, ST9077A, ST9096A, and ST9144A drives. All drives in this family automatically park their heads at power-down. Refer to Figure 1.

Caution. These drives are usually installed in notebook or laptop systems. These computers require qualified or factory trained technicians to perform peripheral upgrades. Be sure to review the terms and conditions of your system warranty before opening the system enclosure.

Default drive geometry

Seagate AT interface drives mimic (translate) other drive geome- tries. If none of the drive types offered by the CMOS support the number of heads, cylinders and sectors per track shown by the following table, and your system does not support a “user-de- fined” drive type, then select a drive type in your system CMOS with a capacity which is less than or equal to the capacity given in the “CMOS MBytes” column of the following table.

If you do not know which drive types your CMOS supports, download FINDTYPE.EXE to assist in choosing an appropriate drive type. Refer to the “Technical Support Services” section in the front of this guide.

When specifying drive geometry to the system CMOS, different values may be used for the Cylinders (1,024 max), Read/Write Heads (16 max), and Sectors per Track (63 max).